Industrial Insulation
     METRIC CHARTS

Extol of Ohio, Inc.

info@ExtolOhio.com || 208 Republic St, Norwalk, OH 44857
Ph: 800.486.9865 || Or: 419.668.2072 || Fx: 419.663.1992

SUCTION, DISCHARGE, AND LIQUID LINE CAPACITIES IN KILOWATTS FOR REFRIGERANT 134a
(SINGLE- OR HIGH-STAGE APPLICATIONS)
NOMINAL
LINE OD,
mm		 SUCTION LINES (Triangle Symbol t = 0.04 K/m) DISCHARGE LINES
(Triangle Symbol t= 0.02 K/m, Triangle Symbol p= 538 Pa/m)		 LIQUID LINES
SATURATED SUCTION TEMPERATURE, °C SEE NOTES a AND b
-10 -5 0 5 10 SATURATED SUCTION
TEMPERATURE, °C		 VEL. =
0.5 m/s		 Triangle Symbol t = 0.02 K/m
Triangle Symbol p = 538 Pa/m
CORRESPONDING Triangle Symbol p, Pa/m
318 368 425 487 555 -10 0 10
TYPE L COPPER LINE
12 0.62 0.76 0.92 1.11 1.33 1.69 1.77 1.84 6.51 8.50
15 1.18 1.45 1.76 2.12 2.54 3.23 3.37 3.51 10.60 16.30
18 2.06 2.52 3.60 3.69 4.42 5.61 5.85 6.09 16.00 28.40
22 3.64 4.45 5.40 6.50 7.77 9.87 10.30 10.70 24.50 50.10
28 7.19 8.80 10.70 12.80 15.30 19.50 20.30 21.10 41.00 99.50
35 13.20 16.10 19.50 23.50 28.10 35.60 37.20 38.70 64.90 183.00
42 21.90 26.80 32.40 39.00 46.50 59.00 61.60 64.10 95.20 304.00
54 43.60 53.20 64.40 77.30 92.20 117.00 122.00 127.00 160.00 605.00
67 77.70 94.60 115.00 138.00 164.00 208.00 217.00 226.00 248.00 1080.00
79 120.00 147.00 177.00 213.00 253.00 321.00 335.00 349.00 346.00 1670.00
105 257.00 313.00 379.00 454.00 541.00 686.00 715.00 744.00 618.00 3580.00

Notes:

  1. Table capacities are in kilowatts of refrigeration.
    Triangle Symbol p = pressure drop per equivalent line length, Pa/m
    Triangle Symbol t = corresponding change in saturation temperature, K/m
  2. Line capacity for other saturation temperatures ?t and equivalent lengths Le
    Line Capacity = Table Capacity [ Table Le X Actual Triangle Symbol t ] 0.55
    _____ _____
    Actual L Table Triangle Symbol t
  3. Saturation temperature triangle t for other capacities and equivalent lengths
  4. Values in the table at the right are based on 40°C condensing temperature. Multiply table capacities by the following factors for other condensing temperatures.
Condensing
Temperature, °C		 Suction
Line		 Discharge
Line
20 1.239 0.682
30 1.120 0.856
40 1.0 1.0
50 0.888 1.110

a The sizing shown is recommended where any gas generated in the receiver must return up the condensate line to the condenser without restricting condensate flow. Water-cooled condensers, where the receiver ambient temperature may be higher than the refrigerant condensing temperature, fall into this category.

b The line pressure drop triangle p is conservative; if subcooling is substantial or the line is short, a smaller size line may be used. Applications with very little subcooling or very long lines may require a larger line.

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Ph: 800.486.9865 || Or: 419.668.2072 || Fax: 419.663.1992
info@ExtolOhio.com || Located at:
208 Republic Street, Norwalk, Ohio 44857